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Tag: Inverter technology

What is a 12-phase diode rectifier with transformer injected harmonics?

What is a 12-phase diode rectifier with transformer injected harmonics?

Posted on May 20, 2022May 20, 2022 by admin

This time, we introduce a 12-phase diode rectifier technology that uses transformers to inject harmonics, which can make 12-phase diode rectifiers become 24-phase diode rectifiers to improve the input power factor of mains power. The harmonic injection circuit is composed of an injection transformer and a single-phase rectifier bridge. The circuit utilizes the characteristic that…

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Development process and status quo of IGBT three-phase SPWM inverter

Development process and status quo of IGBT three-phase SPWM inverter

Posted on December 10, 2021March 17, 2022 by admin

The so-called inverter refers to the reverse converter of a rectifier (also known as a smooth converter). The so-called IGBT three-phase SPWM inverter refers to a power electronic converter that uses the semiconductor power switching device IGBT as a switch and adopts the SPWM control method to convert DC power into a three-phase AC power…

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What is PWM pulse width modulation technology?

What is PWM pulse width modulation technology?

Posted on October 12, 2021March 17, 2022 by admin

PWM pulse width modulation technology (Pulse Width Modulation, PWM) refers to the use of a reference wave (usually a sine wave, sometimes a trapezoidal wave or a sine wave or square wave injected with zero sequence harmonics) as a modulating wave (Modulating Wave) ), and F (F is the carrier ratio) times the frequency of…

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Recent Posts

  • Why two three-phase single switch Boost SPWMPFCs are used for interleaving
  • Fixed switching frequency and variable switching frequency PFC rectifier
  • Analysis of Three Phase Single Switch Boost PFC Rectifier Controlled by Variable Frequency PWM
  • Detailed explanation of harmonic injection three-phase boost single-switch SPWMPFC rectifier
  • Explanation of three super boost single open sky SPWM PFC rectifier

Categories

  • Basic knowledge of IGBT three-phase SPWM inverter
  • Basic knowledge of uninterruptible power supply
  • SCR polyphase phase controlled power frequency rectifier and three-phase boost single switch SPWM PFC rectifier

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12-Phase Diode Rectifier Using Transformer-Injected Harmonics 12-phase rectification AC filter circuit Active filter Carrier triangle wave Cascade superposition of independent DC power supply Compensation for the influence of dead zone Composition of three-phase full-bridge SPWM inverter Development of inverter technology Double Fourier series analysis filtering principle of the DC side active filter High frequency UPS influence of dead zone on output voltage Influence of Input Transformer Connection on Harmonic Current Influence of unbalanced load on DC input current fluctuation Instantaneous space current phasor control method using hysteresis comparator Inverter technology Non-linear load Power frequency UPS PWM technology Rectifier SCR12 Phase Rectifier SCR polyphase phase controlled power frequency rectifier Simulation results of three-phase four-wire inverter Sinusoidal modulation wave space flux linkage phasor SPWM control method SPWM control technology SPWM soft-switching inverter technology The Composition and Principle of Mains Input Multiphase Rectifier Three-level SPWM control according to line voltage Three-level SPWM inverter Three-level SPWM wave Three-level SPWM waveform Three-phase half-bridge inverter Thyristor rectifier Two-level SPWM control according to the phase voltage waveform Two-level SPWM inverter Types of SPWM Types of spwm multilevel inverters Unbalanced load of inverter Various control methods of ups Working principle of the three-phase four-leg inverter Working principle of three-phase full-bridge SPWM inverter Working principle of three-phase half-bridge SPWM inverter
ups uninterruptible power supply is a UPS power supply that contains energy storage devices, which can be classified according to the characteristics of transformers and the structure of ups electrical circuit.